根据可贷资金模型，以下因素的变动会使债券需求水平降低的是( )。A．投资收益增加

Jane always goes to school early. She likes to talk to her friends before class. After school she does not go home early. She is always late. Jane stops to see the animals in the pet shop. She likes to see the dogs. One of them is a little white dog. She watches the little dog play in the window of the shop. She watches for a long time, so she comes home late.

One day her father and mother ask why she is late, and she tells them about the little dog in the pet shop.

Jane is not late the next day. She stops to look in the window of the shop. But she doesn’t see the dog, and she is very sad. She is also very happy, today is her birthday.

Mother shows her a big birthday cake and Father gives her a birthday surprise(惊奇). He gives her the little white dog from the shop. Jane is very happy. The next day Jane does not come home late. She runs home to play with the white dog.

小题1:Before class begins, Jane usually ________.

A．talks to her friends

B．plays with her friends

C．looks at the dogs in the window

D．takes a bus小题2:After school Jane _____.

A．comes home early

B．is always late to go home

C．plays with the dogs

D．looks at the shops along the road小题3:Jane likes _____ best.

A．the big dog

B．the little white dog

C．little animals

D．the pet shop小题4:The little dog is not there because it _______.

A．is stolen(偷)

B．is put away(抛弃) by the shop

C．is ill

D．is sold(卖) out by the shop小题5:The birthday surprise is _________.

A．a big cake

B．some presents

C．the little white dog

D．a birthday party

通过“网上邻居”图标，可以查看当前登录到网上的所有计算机，并共享它们所提供的资源。（）

通过Q循环，每传递1个电子，就有（）个H⁺被泵到膜间隙。

如图甲所示，在同一竖直平面内的两正对的相同半圆光滑轨道相隔一定的距离，虚线沿竖直方向，一小球能在其间运动，今在最高点与最低点各放一个压力传感器，测试小球对轨道的压力，并通过计算机显示出来，当两个半圆形轨道间距离x变化时，测得两点压力差与距离x的图像如图乙所示，取g=10m/s²，不计空气阻力，求：

（1）小球的质量为多少？

（2）若小球在最低点B的速度为20m/s，为使小球能沿轨道逆时针运动起来，x的最大值为多少？

语用信息